Abstract
The Manganese ore-bodies in India are producing certain electrical potential-fields on the surface, which are typical for those deposits and which can exactly be surveyed by combined Potentiometer- and Resistivity-Method. The range of the relative Potentials, recorded so far, are generally varying between 150 to 200 millivolts, near deeper burried deposits accordingly lower but not lower than 100 millivolts, the relative resistivities varying from 50 to 400 megohms. The electrical surface indications are so clear that the respective position of an ore body can be located with an evident exactness as it is proved in this paper. Furthermore it is demonstrated how vaste geological areas can be prospected in a minimum of time by this method for the benefit of the mining industry.
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